Frank O'Brien (rugby union)

Frank O'Brien was an Irish rugby union international who played as a prop. He represented Ireland in two Test matches in 1947. Details about his club career, place and date of birth, and place and date of death are currently unavailable or unverified. He featured in the Irish squad following the resumption of international rugby after World War II. His two caps came against England at Lansdowne Road and against Wales at Ravenhill.